Viola is a genus of flowering plants in the violet family Violaceae, with around 400500 species distributed around the world. Most species are found in the temperate Northern Hemisphere, however some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes. Some Viola species are perennial plants, some are annual plants, and a few are small shrubs. A large number of species, varieties and cultivars are grown in gardens for their ornamental flowers. In horticulture the term 'pansy' is normally used for those multi-coloured, large-flowered cultivars which are raised annually or biennially from seed and used extensively in bedding. The terms 'viola' and 'violet' are normally reserved for small-flowered annuals or perennials, including the species. Viola typically have heart-shaped, scalloped leaves, though a number have palmate leaves or other shapes.
Contributions by Hardyplants, Darorcilmir, and Jjron.